How to use the online alarm clock
While getting ready for afternoon tea at a hotel, set the 4:21 pm alarm before choosing what to wear, checking the route or gathering your booking details. It gives you a clear cue to stop preparing and leave at the time you planned, rather than watching the clock throughout. If tea begins nearer 5:00 pm, the alarm can also mark the point when those final 39 minutes need to be kept for travelling and finding the entrance.
Your hotel tea plans could be disrupted if the alert plays through headphones left in a pocket or another room. After setting it, check where the sound is being sent and test the volume through the speakers you expect to hear. Remove or disconnect unused headphones if necessary. This browser alarm will not sound for your tea appointment after its page has been closed or the phone or computer has gone to sleep, so use a separate backup alarm when missing the cue would make you late.
Leaving for a hotel in the afternoon can feel different indoors and outside, particularly on a damp British day. Before 4:21 pm, check the air beyond the front door or an open window rather than judging it from the room. Humidity may make a light coat feel less comfortable during the journey, while fresher air may suit an extra layer. Keep an umbrella close if the air feels heavy and rain looks likely.
Common questions
Can I change the sound?
Yes, there is a short list of tones to pick from before you press Start. Softer sounds are easy to sleep through, so a firmer bell tends to be the safer choice for anything early in the morning.
Will it still be right when the clocks change?
Yes. It reads your device's local clock, so the move between GMT and BST at the end of March and October is picked up automatically, as long as the computer's date, time and time zone are set correctly.
Can I use this on a phone?
It works in a mobile browser, but phones lock the screen and suspend background tabs far more readily than a laptop does, which can stop the alarm sounding. For anything important, a desktop or a plugged-in laptop is the steadier option.
Does the alarm still work if I close the tab?
No. Everything runs inside this page, so closing the tab — or quitting the browser altogether — ends the countdown there and then. Leaving it open in the background is all it asks, and switching to another tab makes no difference.
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